Windows of metal; gates of metal; metal building materials, namely, building boards; metal doors; metal door frames; transportable buildings of metal; pre-fabricated buildings of metal; fittings of metal for windows; window stops of metal; locks of metal, other than electric; door panels of metal; building panels of metal; sheets and plating of metal; door handles of metal; metal runners for sliding doors; non-electric metal door bells; door casing of metal; non-electric, spring-loaded metall...